Datasheet AD7864 (Analog Devices) - 4
| Manufacturer | Analog Devices |
| Description | High Speed, Low Power, 4-channel Simultaneous Sampling, 12-Bit ADC |
| Pages / Page | 29 / 4 — AD7864. SPECIFICATIONS. Table 1. Parameter A. Version1. B Version. Unit. … |
| Revision | D |
| File Format / Size | PDF / 683 Kb |
| Document Language | English |
AD7864. SPECIFICATIONS. Table 1. Parameter A. Version1. B Version. Unit. Test Conditions/Comments
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AD7864 SPECIFICATIONS
VDD = 5 V ± 5%, AGND = DGND = 0 V, VREF = internal, clock = internal; all specifications TMIN to TMAX, unless otherwise noted.
Table 1. Parameter A Version1 B Version Unit Test Conditions/Comments
SAMPLE AND HOLD −3 dB Full Power Bandwidth 3 3 MHz typ Aperture Delay 20 20 ns max Aperture Jitter 50 50 ps max Aperture Delay Matching 4 4 ns max DYNAMIC PERFORMANCE2 fIN = 100.0 kHz, fS = 500 kSPS Signal-to-(Noise + Distortion) Ratio3 @ 25°C 70 72 dB min TMIN to TMAX 70 70 dB min Total Harmonic Distortion3 −80 −80 dB max Peak Harmonic or Spurious Noise3 −80 −80 dB max Intermodulation Distortion3 fa = 49 kHz, fb = 50 kHz Second-Order Terms −80 −80 dB typ Third-Order Terms −80 −80 dB typ Channel-to-Channel Isolation3 −80 −80 dB max fIN = 50 kHz sine wave DC ACCURACY Any channel Resolution 12 12 Bits Relative Accuracy3 ±1 ±1/2 LSB max Differential Nonlinearity3 ±0.9 ±0.9 LSB max No missing codes AD7864-1 Positive Gain Error3 ±3 ±3 LSB max Positive Gain Error Match3 +3 ±3 LSB max Negative Gain Error3 ±3 ±3 LSB max Negative Gain Error Match3 +3 ±3 LSB max Bipolar Zero Error ±4 ±3 LSB max Bipolar Zero Error Match +2 ±2 LSB max AD7864-3 Positive Gain Error3 ±3 LSB max Positive Gain Error Match3 2 LSB max Negative Gain Error3 ±3 LSB max Negative Gain Error Match3 2 LSB max Bipolar Zero Error ±3 LSB max Bipolar Zero Error Match 2 LSB max AD7864-2 Positive Gain Error3 ±3 LSB max Positive Gain Error Match3 3 LSB max Unipolar Offset Error ±3 LSB max Unipolar Offset Error Match 2 LSB max ANALOG INPUTS AD7864-1 Input Voltage Range ±5, ±10 ±5, ±10 V Input Resistance 9, 18 9, 18 kΩ min AD7864-3 Input Voltage Range ±2.5 ±2.5 V Input Resistance 4.5 4.5 kΩ min Rev. D | Page 3 of 28 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM PRODUCT HIGHLIGHTS TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS TIMING CHARACTERISTICS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TERMINOLOGY THEORY OF OPERATION CONVERTER DETAILS Track-and-Hold Amplifiers Reference CIRCUIT DESCRIPTION ANALOG INPUT AD7864-1 AD7864-2 AD7864-3 SELECTING A CONVERSION SEQUENCE TIMING AND CONTROL Reading Between Each Conversion in the Conversion Sequence Reading After the Conversion Sequence USING AN EXTERNAL CLOCK STANDBY MODE OPERATION ACCESSING THE OUTPUT DATA REGISTERS OFFSET AND FULL-SCALE ADJUSTMENT POSITIVE FULL-SCALE ADJUST NEGATIVE FULL-SCALE ADJUST DYNAMIC SPECIFICATIONS SIGNAL-TO-NOISE RATIO (SNR) EFFECTIVE NUMBER OF BITS INTERMODULATION DISTORTION AC LINEARITY PLOTS MEASURING APERTURE JITTER MICROPROCESSOR INTERFACING AD7864 TO ADSP-2100/ADSP-2101/ADSP-2102 INTERFACE AD7864 TO TMS320C5x INTERFACE AD7864 TO MC68HC000 INTERFACE VECTOR MOTOR CONTROL MULTIPLE AD7864S IN A SYSTEM OUTLINE DIMENSIONS ORDERING GUIDE
AD7864 SPECIFICATIONS
VDD = 5 V ± 5%, AGND = DGND = 0 V, VREF = internal, clock = internal; all specifications TMIN to TMAX, unless otherwise noted.
Table 1. Parameter A Version1 B Version Unit Test Conditions/Comments
SAMPLE AND HOLD −3 dB Full Power Bandwidth 3 3 MHz typ Aperture Delay 20 20 ns max Aperture Jitter 50 50 ps max Aperture Delay Matching 4 4 ns max DYNAMIC PERFORMANCE2 fIN = 100.0 kHz, fS = 500 kSPS Signal-to-(Noise + Distortion) Ratio3 @ 25°C 70 72 dB min TMIN to TMAX 70 70 dB min Total Harmonic Distortion3 −80 −80 dB max Peak Harmonic or Spurious Noise3 −80 −80 dB max Intermodulation Distortion3 fa = 49 kHz, fb = 50 kHz Second-Order Terms −80 −80 dB typ Third-Order Terms −80 −80 dB typ Channel-to-Channel Isolation3 −80 −80 dB max fIN = 50 kHz sine wave DC ACCURACY Any channel Resolution 12 12 Bits Relative Accuracy3 ±1 ±1/2 LSB max Differential Nonlinearity3 ±0.9 ±0.9 LSB max No missing codes AD7864-1 Positive Gain Error3 ±3 ±3 LSB max Positive Gain Error Match3 +3 ±3 LSB max Negative Gain Error3 ±3 ±3 LSB max Negative Gain Error Match3 +3 ±3 LSB max Bipolar Zero Error ±4 ±3 LSB max Bipolar Zero Error Match +2 ±2 LSB max AD7864-3 Positive Gain Error3 ±3 LSB max Positive Gain Error Match3 2 LSB max Negative Gain Error3 ±3 LSB max Negative Gain Error Match3 2 LSB max Bipolar Zero Error ±3 LSB max Bipolar Zero Error Match 2 LSB max AD7864-2 Positive Gain Error3 ±3 LSB max Positive Gain Error Match3 3 LSB max Unipolar Offset Error ±3 LSB max Unipolar Offset Error Match 2 LSB max ANALOG INPUTS AD7864-1 Input Voltage Range ±5, ±10 ±5, ±10 V Input Resistance 9, 18 9, 18 kΩ min AD7864-3 Input Voltage Range ±2.5 ±2.5 V Input Resistance 4.5 4.5 kΩ min Rev. D | Page 3 of 28 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM PRODUCT HIGHLIGHTS TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS TIMING CHARACTERISTICS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TERMINOLOGY THEORY OF OPERATION CONVERTER DETAILS Track-and-Hold Amplifiers Reference CIRCUIT DESCRIPTION ANALOG INPUT AD7864-1 AD7864-2 AD7864-3 SELECTING A CONVERSION SEQUENCE TIMING AND CONTROL Reading Between Each Conversion in the Conversion Sequence Reading After the Conversion Sequence USING AN EXTERNAL CLOCK STANDBY MODE OPERATION ACCESSING THE OUTPUT DATA REGISTERS OFFSET AND FULL-SCALE ADJUSTMENT POSITIVE FULL-SCALE ADJUST NEGATIVE FULL-SCALE ADJUST DYNAMIC SPECIFICATIONS SIGNAL-TO-NOISE RATIO (SNR) EFFECTIVE NUMBER OF BITS INTERMODULATION DISTORTION AC LINEARITY PLOTS MEASURING APERTURE JITTER MICROPROCESSOR INTERFACING AD7864 TO ADSP-2100/ADSP-2101/ADSP-2102 INTERFACE AD7864 TO TMS320C5x INTERFACE AD7864 TO MC68HC000 INTERFACE VECTOR MOTOR CONTROL MULTIPLE AD7864S IN A SYSTEM OUTLINE DIMENSIONS ORDERING GUIDE
